Update dependency org.openapitools:jackson-databind-nullable to v0.2.8

Author: renovate[bot]

pom.xml

@@ -28,7 +28,7 @@
         <okhttp-version>4.12.0</okhttp-version>
         <gson-version>2.10.1</gson-version>
         <commons-lang3-version>3.18.0</commons-lang3-version>
-        <jackson-databind-nullable-version>0.2.6</jackson-databind-nullable-version>
+        <jackson-databind-nullable-version>0.2.8</jackson-databind-nullable-version>
         <jakarta-annotation-version>1.3.5</jakarta-annotation-version>
         <beanvalidation-version>2.0.2</beanvalidation-version>
         <junit-version>5.10.3</junit-version>